Detachable tank for pressure burners



July 14, 1931.

F. E. WHITEET AL DETACHABLE TANK FOR PRESSURE BURNERS Filed Sept. 10,1927 2 Sheets-Sheet l L I l gmntow Iredfl WM,

Alf'itcd 861 mhm n -MW Isl/ 4 July 14, 1931. F. E. WHITE ETAL. 1,314,068

DETACHABLE TANK FOR PRESSURE BURNERS I 2 Sheets-Sheet 2 Filed Sept. 10,1927 I nvflni'or: Fz ted E. Whii'e Alfr: flui'l'z'man, h gs.

Patented July 14, 1931 i FRED E. WHITE AND ALFRED TO FLORENCE STOVECOMPANY, OF MASSACHUSETTS RUTTIMAN, OF GARDNER-MASSACHUSETTS, ASSIGNOBSOF GARDNER, MASSACHUSETTS, A CORPORATION DETACHABLE TANK FOR YRESSUREBURNERS Application filed September 10, 1927. Serial No. 218,668.

2 I This invention relates to a form of tank to be used as the fuelsuppl with a burner when pressureis necessary to orce fuel to theburner. The invention is not concerned with the type of burner but onlywith the tank structure and the means whereby the same is made readilydetachable to the fuel line.

The principal object of the invention is the provision of a tank asabove described which may be readily and quickly without the use ofcomplicated tools, detac ed for refilling and then replaced and attachedto the fuel line and still maintain the requisite pressure to feed fuelto the burner. are for the most part used by housewives who are notmechanically inclined it is essential to'an efiicient device that itnature.

To this end the invention consists in one aspectpof a container adaptedto hold a fluid under pressure either with or without selfcontainedmeans to create such pressure, and

' means to attach said tank to an outlet or feed line so that fluidwithin the tank may be fed to the line.

The invention further consists in the tank and its assembly er se, andin the novel arrangements, com mations and construction conicaldepression 2. Secured around the of arts shown and described.

11 the drawings Figure 1 is a side elevation partly in .section of anassembly embodying our invention. Fig. 2 is a similar view of anassembly including a different form of oil exit tube connection. Y V

Fig. 2a is asomewhat enlarged detail view of the oil exit connection ofFig. 2 in a different position. p Fig. 2b is ahorizontal section takenthrough the lower part of the head 9, and showing the washer forming abearing for the spring and an abutment for the collaron the pipe. Fig. 3is a detail view of the clamp of Fig. 1. Fig. 3a is a perspectivedetailof the clam of Fi 1 applied to the fixture and tank hea In igs. 1 and 2is shown a tank or container 1 of any desired contour,- and of a one ormore piece construction provided'at the top with filling orifice locatedin an inverted usto- As such devices be of a simple orifice is areenforcing ring 3 threaded on the inside to receive screw cap 4 havingwings 5. A removable screw plug is shown at 6 which is to be replaced byany desired type of pump. (not shown) for creating pressure wlthin thetank, all as is well known. The usual valve 7 to prevent release ofpressure is located beneath the plu 6.

To one side of the llin aperture an oil exit tube 8 isrovided an in theform of Fig. 1 is suita lysecured to the top of the tank, in afluid-tight manner and having a flared inverted frusto-conical head 9.The bottom of tube 8 extends to or near the tank bottom.

In the lower portion of the hub, 1s screwed a nipple 13 having an endface correspondingeto the frusto-conical portion of the feed tu head 9.An axial bore 14 communicates with the oil line 10. The upper portion ofthe hub 12 is provided with a screw threaded recess' 15 adapted toreceive the similarly threaded end 16 of the clamp screw 17. This screwis rotatably carried by a clamp proper 18 conveniently comprising a bandof metal bent u on itself and having its ends joined.

The ower horizontal portion of the clamp is provided with a slot 19adapted to sli between the shoulders 20 on the feed tube ead. It will bethus seen that by inserting the frusto-conical face of the nip 1e 13into the corresponding portion of the eed tube head, and locating theslot 19 as above described, upon rotatin the handle 21, the feed tubehead 9 may die tightly drawn into contact with the nipple 13 and afluid-tight joint efiected. By reversing the operation, the tank may bereadily detached from the pipe line for refilling.

A wire bail or attached to the tank to facilitate handling thereof.

A tray or supporting shelf 23 may be locat- I ed beneath the tank.

. As shown, the top of the outlet pipe is above the level of the fillercap so that in filling no oil will flow out. Of this pipe. By placinghandle 22- is provided and the fillin aperture ofi center in the tanktop, surroumfed by the funnel like recess 2, the tank may be easily andquickly filled and when carelessly overfilled, by tipping the tank, thisexcess will flow into the tank proper, whereu on the filler cap may bereplaced.

' As the wa ls of the funnel like recess extend down a considerabledistance into the tank roper, it insures a large air space above thefiuid. This air pocket assists in prolonging the air pressure within thetank.

In the modified form of fitting shown in Figs. 2, 2a and 2b, the oilexit tube 8 is provided with a collar 73 secured thereto. A recess inthe bottom of the fixture is provided to receive a washer 74 having anirregularly shaped aperture therein (Fig. 2b) the washer having portionsprojecting towards its center which engage the collar 73 and preventupward movement of the collar 73 of tube 8 beyond the washer 7 4. Aspring ring 75 prevents dropping of the washer 74.

The exit tube 8 is provided with an apertured cap 76 disposed in the topof the tube, the top of the cap being rounded to fit a cor respondingconcavity in the end of the nipple 13. A coil spring 77 resting upon thewasher 74 and engaging cap 76 normally tends to thrust the exit tubeinto the position shown in Fig. 2a. Of course, when the nipple 13 iscoupled to the fixture 9 the exit tube will be depressed against theaction of the spring 77 until the beveled walls of the nipple 13 areseated tight in the fixture 9 as shown in Fig. 2. The advantage of thismodified structure is that when the tank 1 of Fig. 1 is detached forrefilling, if there is enough fuel left therein to cover the bottom ofthe exit tube some of the fuel will be forced up through the tube andwill spill out over the top of fixture 9 under impulse of air pressureas soon as the nipple 13 is released from the fixture. It will bereadily apparent that by the use of the combination in Figs. 2, 2a, and2b, as soon as the nipple 13 is released from contact with the fixture9, as in Fig. 2a, the air pressure within the tank will escape in thedirection of the two arrows thus preventing spilling of the fuel.

What is claimed is:

1. In combination, a feed line, a fixture secured thereto having a borethrough which fuel is adapted to pass, a hollow nipple carried by thefixture, said nipple having a frusto conical terminal face, a fuel tankhaving a tube through which fuel is delivered to the feed line, a boredhead extending above the tank top, said tube projecting within the head,means to maintain a fluid tight joint between the end of the tube andthe nipple, a frusto conical recess in the topofthe head, and means topress-the frusto-conical face of the nipple against the frusto-conicalface of the recessed head, whereby a fluid tight joint may be secured.

2. In combination, a feed line for oil stoves or the like, a fixturesecured to said feed line and having abore communicating with said feedline, said fixture having a downwardly disposed tapered frusto-conicalface at its lower end, a fuel tank havin a feed tube therein forsupplying said feed line, a bored head secured in the top wall of saidtank and,

projecting above the tank top and having a flange spaced from said tanktop, said feed tube being received at its upper end within the bore. ofsaid head, said head having a correspondingly tapered frusto-conicalrecess therein to receive the tapered end of the fixture and to alignwiththe bore thereof, a clamp carried by said fixture and ada ted fordetachable engagement beneath the fi ange to press the two taperedfrusto-conical faces into fluid-ti ht engagement.

3. In com ination, a feed line for oil stoves or the like, a boredfixture communicating with said feed line, a fuel tank, a delivery tubein the tank movably mounted in an opening in the wall of said tank andbeing adapted to extend through the wall of the tank into communicationwith the free terminal of said bored fixture, said movable mountingincluding yieldable means carried by the tank and urging the tube. intofluid tight communicating engagement with said bored fixture.

4. Apparatus according to claim 3 in which said tube is of smallerexternal diameter than the opening in the wall so that clearance isprovided therebetween leadin to the upper part of the tank chamber,saifree terminal of said bored fixture being of a size adapted to closesaid clearance when brought into said opening and into engagement withthe wall defining the opening, said yieldable means including a springmaintaining "fluid tight communication between said tube and fixturewhether said clearance is closed or open.

5. In combination, a feed line-for oil stoves or the like, a fixturesecured to said feed line and having a bore communicating with said feedline, said fixture having a contact face at the free terminal of itsbore, a fuel tank, a bored head secured in the wall of said tank andprojecting without the tank, a feed tube within the tank movably mountedwithin the bore of the head, means for maintaining a fiuidtightcommunicating joint between the end of the tube and the end of thefixture, said head presenting a contact face at its outer end, and meansto clamp together the contact faces of the fixture and the head withtheir bores in alignment to provide a fluid tight joint, said tube'being of smaller external diameter than. the bore of the head so that apassage space is provided therebetween communicating with the up 1' partof the tank chamber, said passage eing closed by said fixture when saidcontact faces are closed by said clamp means, and said joint maintainingmeans including a spring maintaining the fluid tight joint between thetube and fixture whether said passage is closed or open.

6. Apparatus according to claim 5 in which said fixture contact face isof tapered frusto- 5 conical form and said head contact face comprises acorrespondingl tapered frustoconical upper portion 0 the head bore, a

projection on the tube and a cooperating projection on the head forlimiting upward l movement of the tube in the head, said head projectionalso forming a seat for one end of said spring, said tube at its outerend havin a shoulder forming a seat for the opposite on?! of saidspring, said fixture having a reverse taper at the free end of its boreand said tube having a correspondingly shaper Y projectingportion toseat in said reversetaper in a fluid tight manner.

' 7 In combination, an oil line, a fixture to 7 l0 afford a support fora tank, said fixture having a depending nipple with a vertical boretherethrough communicating with the horizontal bore in the fixture whichcommunicates with the oil line, a removable oil tank 25 having an oildischarge tube, a head secured to the tank having a bore to receive saidtube and having a seat for the depending nipple in the fixture, saidnipple and head having complementary fI'lLStO-{OOIllCfll contact sur- 7faces to make a liquid tight joint, and means to hold the tank to thefixture with the nipple and seat in the head in fluid-tight contact,said tank thereby being suspended from said fixture. 85 8. Incombination, a oil line, a fixture hav-- ing a bore and a bored nippleto lead oil to said line, a tank havin a delivery tube, a bored head onthe tank into which said tube extends, said head having, a seat for thenip le, and a discharge passage from the top of.t e tank extending tosaid seat, said nipple when seated closing said passage against thepassage of air from the top of the tank, but permitting the discharge ofair from the top of the tank when unseated, said nip le forming thecommunication between 518 tube and the bore of the fixture for thedischar e of oil to the oil line, and means for hol ing the nippleseated in the head a with fluid tight contact, substantially asdescribed.

9. Apparatus accordin to .claim 1 in which said tube is of smal erexternal diameter than the bore in said head so that a free 55 airpassage to atmosphere is provided therebetween, said passage beingclosed when the frusto-conical face of the nipple and the frusto-conicalface of the recess are pressed to her by said means.

testimony whereof, we affix our signatures. p

FRED E VVHITE'. ALFRED RUTTIMAN.

